When buying a fresh meat cabinet, some users often have a doubt, what is the difference between a fixed frequency fresh meat cabinet and a variable frequency fresh meat cabinet? Which one is better to buy? Below we compare the differences between the fixed frequency fresh meat cabinet and the variable frequency fresh meat cabinet.
When buying a fresh meat cabinet, some users often have a doubt, what is the difference between a fixed frequency fresh meat cabinet and a variable frequency fresh meat cabinet? Which one is better to buy? Below we compare the differences between the fixed frequency fresh meat cabinet and the variable frequency fresh meat cabinet.
1. The temperature adjustment method of the fixed-frequency fresh meat freezer is simple, and the temperature fluctuation range is large, up to 2 °C. When the indoor temperature of the fresh meat freezer reaches the set temperature, the compressor will stop working: when the indoor temperature is 1°C higher than the set temperature, the compressor will be turned on again. The temperature adjustment method of the inverter fresh meat freezer is precise, and the temperature fluctuation range is only 1 °C. Every time the room temperature decreases by 0.5°C, the operating frequency of the compressor decreases by one step; on the contrary, every time the room temperature increases by 0.5°C, the operating frequency of the compressor increases by one step. The higher the room temperature, the higher the compressor operation frequency, so that the air conditioner can quickly cool down: the closer the room temperature is to the set temperature, the lower the compressor operation frequency, and the smaller the cooling capacity provided, so as to maintain the room temperature near the set temperature, and the temperature fluctuates. little.
2. In both cooling and heating states, the compressor speed of the fixed-frequency fresh meat freezer is the same, and the heat-to-cool ratio can only be improved through system matching, which has great limitations. When the inverter air conditioner is heating, the compressor speed is much higher than that when cooling, so the heat-to-cool ratio can be as high as 140% or more. The maximum operating frequency for heating is often about 20Hz higher than the maximum operating frequency for cooling.
3. The speed of the compressor of the main frequency fresh meat freezer is constant, and the compressor below 0 ℃ actually has no heating effect: the inverter air conditioner operates at a high frequency at low temperature, and the heating capacity is 3 to 4 times that of the fixed frequency air conditioner, and the outdoor temperature is - At lOoC, the heating effect is still good.
4. The compressor must be shut down every time overcurrent protection or overvoltage protection occurs in the fixed-frequency fresh meat freezer; whenever circuit protection occurs in the variable-frequency fresh meat freezer, it can be buffered by appropriate frequency reduction operation, so as to achieve non-stop protection, does not affect the user's use.
5. The defrosting performance of the fixed-frequency fresh meat freezer is poor, and there is a cold feeling when dehumidifying. Frequency conversion fresh meat freezer defrosting is accurate and fast, only half the time of fixed frequency fresh meat freezer. Low frequency operation during dehumidification, only dehumidification but not cooling.
The above lists the differences between the five-point fixed-frequency fresh meat cabinet and the variable-frequency fresh meat cabinet. In terms of purchase, everyone should buy according to their needs.
